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Deir"" XPS^"" L502X Service Manual 

Before You Begin Camera Module 

Battery Top Cover 

Module Cover Fan 

Memory Module{s) Subwoofer 

Wireless Mini-Card(s) AC-Adapter Connector 

Optical Drive USB Board 

Palm-Rest Assembly TV Tuner Connector 

Power-Button Board Heat Sink 

Coin-Cell Battery Processor Module 

Hard Drive System Board 

Keyboard Speakers 

Display Flashing the BIOS 



Notes, Cautions, and Warnings 

^ NOTE: A NOTE indicates important information that helps you make better use of your computer. 

y\ CAUTI ON : A CAUTI ON indicates potential damage to hardware or loss of data if instructions are not followed. 

A\ WARNI NG: A WARNI NG indicates a potential for property damage, personal injury, or death. 



Information in this document is subject to change without notice. 
© 2011 Dell Inc. All rights reserved. 

Trademarks used in this text: Dell^", the DELL logo, and XPS™ are trademarks of Dell Inc.; Microsoft®, Windows®, and the Windows start button logo O are either trademarks or 
registered trademarks of Microsoft Corporation in the United States and/or other countries; Bluetooth® Is a registered trademark owned by Bluetooth SIG, Inc. and is used by Dell 
I nc. under license. 

Reproduction of these materials in any manner whatsoever without the written permission of Dell I nc. is strictly forbidden. 

Regulatory model: PllF series Regulatory type: P11F003 

2011 - 02 Rev. AOO 



Back to Contents Page 

Battery 

Dell^'' XPS"^ L502X Service Manual 

9 Removing the Battery 
9 Replacing the Battery 

y1\ WARNI NG: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best 
practices information, see the Regulatory Compliance Homepage at www.detl.com/ regulatory_ compliance. 

y\ CAUTI ON: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Deir" 
is not covered by your warranty. 

y\ CAUTI ON: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal 
surface (such as a connector on your computer). 

j\ CAUTI ON : To avoid damage to the computer, use only the battery designed for this particular Dell computer. Do not use batteries designed for 
other Dell computers. 



Removing the Battery 



1. Follow the instructions in Before You Begin . 

2. Turn the computer over. 

3. Slide the battery release latch to the side. 

4. Lift the battery up at an angle and remove it from the battery bay. 




1 


battery 


2 


battery release latch 



Replacing the Battery 

/\ CAUTI ON: To avoid damage to the computer, use only the battery designed for this particular Dell computer. 

1. Follow the instructions in Before You Begin . 

2. Align the tabs on the battery with the slots in the battery bay and press the battery down until it clicks into place. 



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Back to Contents Page 

Before You Begin 

Dell^'' XPS^<^ L502X Service Manual 

9 Recommended Tools 

9 Turning Off Your Computer 

• Before Working Inside Your Computer 

This manual provides procedures for removing and installing the components in your computer. Unless otherwise noted, each procedure assumes that the 
following conditions exist: 

I You have performed the steps in Turning Off Your Computer and Before Working Inside Your Computer . 

I You have read the safety information that shipped with your computer. 

I A component can be replaced or— if purchased separately— installed by performing the removal procedure in reverse order. 



Recommended Tools 

The procedures in this document may reguire the following tools: 
I Small flat-blade screwdriver 
I Phillips screwdriver 
I Plastic scribe 
I BIOS executable update program available at 5upport.dell.com 



Turning Off Your Computer 

/\ CAUTI ON: To avoid losing data, save and close all open files and exit all open programs before you turn off your computer. 

1. Save and close all open files and exit all open programs. 

2. To shut down the operating system, click Start *? and then click Shut Down. 

3. Ensure that the computer is turned off. If your computer did not automatically turn off when you shut down the operating system, press and hold the 
power button until the computer turns off. 

Before Working I nside Your Computer 

Use the following safety guidelines to help protect your computer from potential damage and to help to ensure your own personal safety. 

yi\ WARNI NG: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best 
practices information, see the Regulatory Compliance Homepage at www.dell.com/ regulatory_ compliance. 

j/\ CAUTI ON: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal 
surface (such as a connector on your computer). 

/\ CAUTI ON: Handle components and cards with care. Do not touch the components or contacts on a card. Hold a card by its edges or by its metal 
mounting bracket. Hold a component such as a processor by its edges, not by its pins. 

y\ CAUTI ON : Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by DelT*^ 
is not covered by your warranty. 

y\ CAUTI ON: When you disconnect a cable, pull on its connector or on its pull-tab, not on the cable itself. Some cables have connectors with locking 
tabs; if you are disconnecting this type of cable, press in on the locking tabs before you disconnect the cable. As you pull connectors apart, keep 
them evenly aligned to avoid bending any connector pins. Also, before you connect a cable, ensure that both connectors are correctly oriented 
and aligned. 

j^\ CAUTI ON: To avoid damaging the computer, perform the following steps before you begin working inside the computer. 

1. Ensure that the work surface is flat and clean to prevent the computer cover from being scratched. 

2. Turn off your computer (see Turning Off Your Computer ) and all attached devices. 

y\ CAUTI ON: To disconnect a network cable, first unplug the cable from your computer and then unplug the cable from the network device. 

3. Disconnect all telephone or network cables from the computer. 



4. Press and eject any installed cards from the Media Card Reader. 

5. Disconnect your computer and all attached devices from their electrical outlets. 

6. Disconnect all attached devices from your computer. 

j/\ CAUTI ON: To help prevent damage to the system board, remove the main battery (see Removing the Battery ) before working inside the 
computer. 

7. Remove the battery (see Removing the Battery ). 

8. Turn the computer top-side up, open the display, and press the power button to ground the system board. 

j/\ CAUTI ON: Before touching anything inside your computer, ground yourself by touching an unpainted metal surface, such as the metal at the back 
of the computer. While you work, periodically touch an unpainted metal surface to dissipate static electricity, which could harm internal 
components. 

Bacl< to Contents Page 



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Flashing the BIOS 

Dell^'' XPS^'^ L502X Service Manual 

The BIOS may require flashing when an update is available or when replacing the system board. To flash the BIOS: 

1. Turn on the computer. 

2. Go to 5upport.dell.com/ support/ downloads. 

3. Locate the BIOS update file for your computer: 

^ NOTE: The Service Tag for your computer is located on a label at the bottom of your computer. 

If you have your computer's Service Tag: 

a. Click Enter a Tag. 

b. Enter your computer's Service Tag in the Enter a service tag: field, click Go, and proceed to step 4 . 
If you do not have your computer's Service Tag: 

a. Click Select Model. 

b. Select the type of product in the Select Your Product Family list. 

c. Select the product brand in the Select Your Product Line list. 

d. Select the product model number in the Select Your Product Model list. 

Kj NOTE: If you have selected a different model and want to start over again, click Start Over on the top right of the menu. 

e. Click Confirm. 

4. A list of results appear on the screen. Click Bl OS. 

5. Click Download Now to download the latest BIOS file. 
The File Download window appears. 

6. Click Save to save the file on your desktop. The file downloads to your desktop. 

7. Click Close if the Download Complete window appears. 

The file icon appears on your desktop and is titled the same as the downloaded BIOS update file. 

8. Double-click the file icon on the desktop and follow the instructions on the screen. 
Back to Contents Page 



Back to Contents Page 

Camera Module 

Dell^'' XPS^'^ L502X Service Manual 

9 Removing the Camera Module 
9 Replacing the Camera Module 

y1\ WARNI NG: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best 
practices information, see the Regulatory Compliance Homepage at www.detl.com/ regulatory_ compliance. 

j/\ CAUTI ON: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Deir" 
is not covered by your warranty. 

y\ CAUTI ON: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal 
surface (such as a connector on your computer). 

j\ CAUTI ON: To help prevent damage to the system board, remove the main battery (see Removing the Battery ) before working inside the 
computer. 



Removing the Camera Module 

1. Follow the instructions in Before You Begin . 

2. Remove the battery (see Removing the Battery ). 

3. Remove the module cover (see Removing the Module Cover ). 

4. Remove the memory module(s} (see Removing the Memory Module(s} ). 

5. Remove the palm-rest assembly (see Removing the Palm-Rest Assembly ). 

6. Remove the keyboard (see Removing the Keyboard ). 

7. Remove the display assembly {see Removing the Display Assembly ). 

8. Remove the display bezel {see Removing the Display Bezel ). 

9. Disconnect the camera cable from the connector on the camera module. 




1 camera module 



2 camera cable connector 



10. Gently pry the camera module off the aluminium foil. 



Replacing the Camera Module 



1. Follow the instructions in Before You Begin . 



2. Adhere the camera module to the aluminium foil. 



3. Use the alignment posts on the display back cover to place the camera module in position. 

4. Connect the camera cable to the connector on the camera module. 

5. Replace the display bezel {see Replacing the Display Bezel ). 

6. Replace the display assembly {see Replacing the Display Assembly ). 

7. Replace the keyboard {see Replacing the Keyboard ). 

8. Replace the palm-rest assembly {see Replacing the Palm-Rest Assembly ). 

9. Replace the memory module(s) (see Replacing the Memory Module(s) ). 

10. Replace the module cover (see Replacing the Module Cover ). 

11. Replace the battery (see Replacing the Battery ). 

/\ CAUTI ON : Before turning on the computer, replace all screws and ensure that no stray screws remain inside the computer. Failure to do so may 
result in damage to the computer. 



B ack to Contents Page 



Back to Contents Page 

Coin-Cell Battery 

Dell^'' XPS^'^ L502X Service Manual 

9 Removing the Coin-Cell Battery 
9 Replacing the Coin-Cell Battery 

y1\ WARNI NG: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best 
practices information, see the Regulatory Compliance Homepage at www.detl.com/ regulatory_ compliance. 

j/\ CAUTI ON: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Deir" 
is not covered by your warranty. 

y\ CAUTI ON: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal 
surface (such as a connector on your computer). 

j\ CAUTI ON: To help prevent damage to the system board, remove the main battery (see Removing the Battery ) before working inside the 
computer. 



Removing the Coin-Cell Battery 



1. Follow the instructions in Before You Begin . 

2. Remove the battery (see Removing the Battery ). 

3. Remove the palm-rest assembly (see Removing the Palm-Rest Assembly ). 

4. Using a plastic scribe, gently pry the coin-cell battery out of the battery socket on the system board. 




1 coin-cell battery 



2 plastic scribe 



Replacing the Coin-Cell Battery 



1. Follow the instructions in Before You Begin . 

2. With the positive side facing up, snap the coin-cell battery into the battery socket on the system board. 

3. Replace the palm-rest assembly {see Replacing the Palm-Rest Assembly ). 

4. Replace the battery (see Replacing the Battery ). 

/\ CAUTI ON: Before turning on the computer, replace all screws and ensure that no stray screws remain inside the computer. Failure to do so may 
result in damage to the computer. 



Back to Contents Page 



Back to Contents Page 

USB Board 

Dell^'' XPS"^ L502X Service Manual 

9 Removing the USB Board 
• Replacing the USB Board 

y1\ WARNI NG: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best 
practices information, see the Regulatory Compliance Homepage at www.detl.com/ regulatory_ compliance. 

y\ CAUTI ON: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Deir" 
is not covered by your warranty. 

y\ CAUTI ON: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal 
surface (such as a connector on your computer). 

j\ CAUTI ON: To help prevent damage to the system board, remove the main battery (see Removing the Battery ) before working inside the 
computer. 



Removing the USB Board 

1. Follow the instructions in Before You Begin . 

2. Remove the battery (see Removing the Battery ). 

3. Remove the module cover (see Removing the Module Cover ). 

4. Remove the memory module(s} (see Removing the Memory Module(s} ). 

5. Remove the palm-rest assembly (see Removing the Palm-Rest Assembly ). 

6. Remove the keyboard (see Removing the Keyboard ). 

7. Remove the display assembly {see Removing the Display Assembly ). 

8. Follow the instructions from step 9 to step 14 in Removing the Top Cover . 

9. Remove the AC adapter connector (see Removing the AC-Adapter Connector ). 

10. Lift the connector latch and disconnect the USB-board cable from the connector on the USB board. 

11. Remove the three screws that secure the USB board to the top cover. 

12. Carefully ease the connectors on the USB board out of the slots on the top cover and lift the USB board off the top cover. 




1 


screws (3) 


2 


USB board 


3 


USB-board cable connector 


4 


USB-board cable 



Replacing the USB Board 



1. Follow the instructions in Before You Begin . 

2. Align the connectors on the USB board with the slots on the top cover and place it on the top cover. 

3. Replace the three screws that secure the USB board to the top cover. 

4. Slide the USB-board cable into the connector on the USB board and press the connector latch down to secure the cable. 

5. Replace the AC adapter connector (see Replacing the AC-Adapter Connector ). 

6. Follow the instructions from step 8 to step 11 in Replacing the Top Cover . 

7. Replace the display assembly (see Replacing the Display Assembly ). 

8. Replace the keyboard (see Replacing the Keyboard ). 

9. Replace the palm-rest assembly (see Replacing the Palm-Rest Assembly ). 

10. Replace the memory module(s) (see Replacing the Memory Module(s) ). 

11. Replace the module cover (see Replacing the Module Cover ). 

12. Replace the battery (see Replacing the Battery ). 

y\ CAUTI ON: Before turning on the computer, replace all screws and ensure that no stray screws remain inside the computer. Failure to do so may 
result in damage to the computer. 

Back to Contents Page 



Back to Contents Page 

AC-Adapter Connector 

Dell^'' XPS^'^ L502X Service Manual 

9 Removing the AC-Adapter Connector 
9 Replacing the AC-Adapter Connector 

y1\ WARNI NG: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best 
practices information, see the Regulatory Compliance Homepage at www.detl.com/ regulatory_ compliance. 

j/\ CAUTI ON: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Deir" 
is not covered by your warranty. 

y\ CAUTI ON: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal 
surface (such as a connector on your computer). 

j\ CAUTI ON: To help prevent damage to the system board, remove the main battery (see Removing the Battery ) before working inside the 
computer. 



Removing the AC-Adapter Connector 



1. Follow the instructions in Before You Begin . 

2. Remove the battery (see Removing the Battery ). 

3. Remove the module cover (see Removing the Module Cover ). 

4. Remove the memory module(s} (see Removing the Memory MQdule(s} ). 

5. Remove the palm-rest assembly (see Removing the Palm-Rest Assembly ). 

6. Remove the keyboard (see Removing the Keyboard ). 

7. Remove the display assembly {see Removing the Display Assembly ). 

8. Follow the instructions from step 9 to step 14 in Removing the Top Cover . 

9. Turn the top-cover assembly over. 

10. Disconnect the AC-adapter connector cable from the connector on the system-board. 

11. Make note of the AC-adapter connector cable routing and remove the cable from the routing guides. 

12. Remove the screw that secures the AC-adapter connector to the top cover. 
1 




2 AC adapter connector 



AC-adapter connector cable 



13. Lift the AC-adapter connector off the base cover. 



Replacing the AC-Adapter Connector 

1. Follow the instructions in Before You Begin . 

2. Align the screw hole on the AC-adapter connector with the screw hole on the top cover. 

3. Replace the screw that secures the AC-adapter connector to the top cover. 

4. Route the AC-adapter connector cable through the routing guides. 

5. Connect the AC-adapter connector cable to the system-board connector. 

6. Follow the instructions from step 8 to step 11 in Replacing the Top Cover . 

7. Replace the display assembly (see Replacing the Display Assembly ). 

8. Replace the keyboard {see Replacing the Keyboard ). 

9. Replace the palm-rest assembly {see Replacing the Palm-Rest Assembly ). 

10. Replace the memory module(s) (see Replacing the Memory Module(s) ). 

11. Replace the module cover (see Replacing the Module Cover ). 

12. Replace the battery (see Replacing the Battery ). 

y\ CAUTI ON: Before turning on the computer, replace all screws and ensure that no stray screws remain inside the computer. Failure to do so may 
result in damage to the computer. 

Back to Contents Page 



Back to Contents Page 

Display 

Dell^'' XPS"^ L502X Service Manual 

9 Display Assembly 

ti Display Bezel 

9 Display Panel 

• Display Cable 

O Display-Panel Brackets 

/^ WARNI NG: Before working inside your computer, read the safety information tliat shipped with your computer. For additional safety best 
practices information, see the Regulatory Compliance Homepage at www.dell.com/ regulatory_ compliance. 

y\ CAUTI ON: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Deir" 
is not covered by your warranty. 

y\ CAUTI ON: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal 
surface (such as a connector on your computer). 

j/\ CAUTI ON: To help prevent damage to the system board, remove the main battery (see Removing the Battery ) before working inside the 
computer. 



Display Assembly 
Removing the Display Assembly 

1. Follow the instructions in Before You Begin . 

2. Remove the battery (see Removing the Battery ). 

3. Remove the module cover (see Removing the Module Cover ). 

4. Remove the memory module{s} (see Removing the Memory Module(s) ). 

5. Disconnect the antenna cables from the Mini-Cards. 

6. Note the routing of the Mini-Card antenna cables and remove them from the routing guides on base cover. 

7. Remove the two screws that secure the display assembly to the base cover. 




^ r I 



1 


antenna cables 


2 


base cover 



/\ CAUTI ON: Be extremely careful when opening the display to prevent damaging the display assembly. 



8. Remove the palm-rest assembly (see Removing the Palm-Rest Assembly ). 



9. Turn the computer over and open the display as far as possible. 

10. Remove the keyboard (see Removing the Keyboard ). 

11. Pull the pull-tab to disconnect the display cable from the system-board connector. 

12. Disconnect the digitizer board cable from the system-board connector. 

Ki NOTE: The digitizer board is optional and may not be present in your computer. 

13. Loosen the captive screw that secures the display grounding cable. 




1 


captive screw 


2 


display cable connector 


3 


digitizer board cable | 



14. Note the routing of the display cable and remove the cable from the routing guides. 

15. Note the routing of the Mini-Card antenna cables and remove them from the routing guides on the top cover. 

16. Gently pull the antenna cables up from the bottom of the computer through the slot on the top cover. 

17. Remove the four screws that secure the display assembly to the computer base. 




1 


display assembly 


2 


screws (4) 


3 


display cable 


4 


top cover 


5 


antenna cables 



18. Lift the display assembly off the computer base. 



Replacing the Display Assembly 



1. Follow the instructions in Before You Begin . 

2. Place the display assembly in position and replace the four screws that secure the display assembly to the computer base. 

3. Route the display cable through the routing guides and connect the display cable to the system-board connector. 

4. Connect the digitizer board cable to the system-board connector. 

5. Tighen the captive screw that secures the display grounding cable. 

6. Route the antenna cables through the routing guides on the top cover. 

7. Slide the antenna cables to the bottom of the computer through the slot on the top cover. 

8. Replace the keyboard {see Replacing the Keyboard ). 

9. Replace the palm-rest assembly {see Replacing the Palm-Rest Assembly ). 

10. Close the display and turn the computer over. 

11. Route the antenna cables through the routing guides on the base cover. 

12. Connect the antenna cables to the connectors on the Mini-Card. 

13. Replace the memory module(s) (see Replacing the Memory Module(s) ). 

14. Replace the module cover (see Replacing the Module Cover ). 

15. Replace the battery (see Replacing the Battery ). 

/\ CAUTI ON: Before turning on the computer, replace all screws and ensure that no stray screws remain inside the computer. Failure to do so may 
result in damage to the computer. 

Display Bezel 
Removing the Display Bezel 

/\ CAUTI ON: The display bezel is extremely fragile. Be careful when removing it to prevent damaging the bezel. 

1. Follow the instructions in Before You Begin . 

2. Remove the display assembly (see Removing the Display Assembly ). 

3. Push the display bezel outwards to release it from the tabs that secure the display bezel to the back cover. 

4. Using your fingertips, gently pry the outside edge of the display bezel off the back cover. 

5. Lift the display bezel off the display assembly. 




1 display bezel 



Replacing the Display Bezel 



1. Follow the instructions in Before You Begin . 

2. Align the display bezel with the display back cover, and gently snap it into place. 

3. Replace the display assembly {see Replacing the Display Assembly ). 

j/\ CAUTI ON: Before turning on the computer, replace all screws and ensure that no stray screws remain inside the computer. Failure to do so may 
result in damage to the computer. 

Display Panel 
Removing the Display Panel 

1. Follow the instructions in Before You Begin . 

2. Remove the display assembly (see Removing the Display Assembly ). 

3. Remove the display bezel {see Removing the Display Bezel ). 

4. Disconnect the camera cable from the connector on the camera module. 

5. Pull the pull-tab to disconnect the digitizer board cable from the connector on the digitizer board. 




1 


camera cable 


1 = 


1 display panel 1 


3 


digitizer board cable 



6. Remove the ten screws that secure the display panel to the display back cover. 

7. Remove the two screws that secure the digitizer board to the display back cover. 

8. Note the routing of the antenna cables and remove them from the routing guide on the right display hinge. 

9. Note the routing of the display cable and remove it from the routing guide on the left display hinge. 




1 


display panel 


2 


screws (12) 


3 


display cable 


4 


digitizer board 


5 


antenna cables | 



10. Lift the display panel off the display back cover. 



Replacing the Display Panel 



1. Follow the instructions in Before You Begin . 

2. Place the display panel over the display back cover. 

3. Route the display cable through the routing guide on the left display hinge. 

4. Route the antenna cables through the routing guide on the right display hinge. 

5. Replace the ten screws that secure the display panel to the display back cover. 

6. Replace the two screws that secure the digitizer board to the display back cover. 

7. Connect the camera cable to the connector on the camera module. 

8. Connect the digitizer board cable to the connector on the digitizer board. 

9. Replace the display bezel {see Replacing the Display Bezel ). 

10. Replace the display assembly {see Replacing the Display Assembly ). 

y\ CAUTI ON: Before turning on the computer, replace all screws and ensure that no stray screws remain inside the computer. Failure to do so may 
result in damage to the computer. 



Display Cable 
Removing the Display Cable 

1. Follow the instructions in Before You Begin . 

2. Remove the display assembly {see Removing the Display Assembly ). 

3. Remove the display bezel {see Removing the Display Bezel ). 

4. Remove the display panel {see Removing the Display Panel ). 

5. Turn the display panel over and place it on a clean surface. 

6. Pull the pull-tab to disconnect the display cable from the connector on the display panel. 




1 


pull tab 


2 


display-cable connector | 


3 


display cable 



7. Gently peel off the display cable from the display panel. 

Replacing the Display Cable 

1. Follow the instructions in Before You Begin . 

2. Adhere the display cable to the display panel. 

3. Connect the display cable to the connector on the display panel. 

4. Replace the display panel {see Replacing the Display Panel ). 

5. Replace the display bezel {see Replacing the Display Bezel ). 

6. Replace the display assembly { Replacing the Display Assembly ). 

y\ CAUTI ON: Before turning on the computer, replace all screws and ensure that no stray screws remain inside the computer. Failure to do so may 
result in damage to the computer. 



Display-Panel Brackets 



Removing the Display-Panel Brackets 



1. Follow the instructions in Before You Begin . 

2. Remove the display assembly {see Removing the Display Assembly ). 

3. Remove the display bezel {see Removing the Display Bezel ). 

4. Remove the display panel {see Removing the Display Panel ). 

5. Remove the four screws {two on each side) that secure the display-panel brackets to the display panel. 

6. Remove the display-panel brackets off the display panel. 




1 


screws (4) 


2 


display panel brackets (2) 



Replacing the Display-Panel Brackets 



1. Follow the instructions in Before You Begin . 

2. Place the display-panel brackets in position. 

3. Replace the four screws (two on each side) that secure the display-panel brackets to the display panel. 

4. Replace the display panel {see Replacing the Display Panel ). 

5. Replace the display bezel {see Replacing the Display Bezel ). 

6. Replace the display assembly { Replacing the Display Assembly ). 

/\ CAUTI ON: Before turning on the computer, replace all screws and ensure that no stray screws remain inside the computer. Failure to do so may 
result in damage to the computer. 



Back to Contents Page 



Back to Contents Page 

Fan 

Dell^'' XPS'"" L502X Service Manual 

9 Removing the Fan 
9 Replacing the Fan 

y1\ WARNI NG: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best 
practices information, see the Regulatory Compliance Homepage at www.detl.com/ regulatory_ compliance. 

j/\ CAUTI ON: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Deir" 
is not covered by your warranty. 

y\ CAUTI ON: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal 
surface (such as a connector on your computer). 

j\ CAUTI ON: To help prevent damage to the system board, remove the main battery (see Removing the Battery ) before working inside the 
computer. 



Removing the Fan 



1. Follow the instructions in Before You Begin . 

2. Press and eject any installed cards from the Media Card Reader. 

3. Remove the battery (see Removing the Battery ). 

4. Remove the module cover (see Removing the Module Cover ). 

5. Remove the memory module(s} (see Removing the Memory Module(s) ). 

6. Remove the palm-rest assembly (see Removing the Palm-Rest Assembly ). 

7. Remove the keyboard (see Removing the Keyboard ). 

8. Remove the display assembly (see Removing the Display Assembly ). 

9. Follow the instructions from step 9 to step 14 in Removing the Top Cover . 
10. Remove the two screws that secure the fan to the base cover. 




1 screws (2) 2 fan 



11. Lift the fan off the base cover. 



Replacing the Fan 



1. Follow the instructions in Before You Begin . 



2. Place the fan on the base cover. 

3. Replace the two screws that secure the fan to the base cover. 

4. Follow the instructions from step 8 to step 11 in Replacing the Top Cover . 

5. Replace the display assembly {see Replacing the Display Assembly ). 

6. Replace the keyboard {see Replacing the Keyboard ). 

7. Replace the palm-rest assembly {see Replacing the Palm-Rest Assembly ). 

8. Replace the memory module(s) (see Replacing the Memory Module(s) ). 

9. Replace the module cover (see Replacing the Module Cover ). 

10. Replace the battery (see Replacing the Battery ). 

/\ CAUTI ON : Before turning on the computer, replace all screws and ensure that no stray screws remain inside the computer. Failure to do so may 
result in damage to the computer. 



B ack to Contents Page 



Back to Contents Page 

Hard Drive 

Dell^'' XPS"^ L502X Service Manual 

9 Removing the Hard Drive 
9 Replacing the Hard Drive 

y1\ WARNI NG: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best 
practices information, see the Regulatory Compliance Homepage at www.dell.com/ regulatory_ compliance. 

yf\ WARNI NG: I f you remove the hard drive from the computer when the drive is hot, do not touch the metal housing of the hard drive. 

y\ CAUTI ON : Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by DelT" 
is not covered by your warranty. 

j/\ CAUTI ON: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal 
surface (such as a connector on your computer). 

j/\ CAUTI ON: To help prevent damage to the system board, remove the main battery (see Removing the Battery ) before working inside the 
computer. 

/\ CAUTI ON : To prevent data loss, turn off your computer ( see Turning Off Your Computer ) before removing the hard drive assembly. Do not 
remove the hard drive while the computer is On or in Sleep state. 

y\ CAUTI ON: Hard drives are extremely fragile. Exercise care when handling the hard drive. 

f^ NOTE: Dell does not guarantee compatibility or provide support for hard drives from sources other than Dell. 

1^ NOTE: If you are installing a hard drive from a source other than Dell, you need to install an operating system, drivers, and utilities on the new hard 
drive. 



Removing the Hard Drive 

1. Follow the instructions in Before You Begin . 

2. Remove the battery (see Removing the Battery ). 

3. Remove the palm-rest assembly (see Removing the Palm-Rest Assembly ). 

4. Remove the four screws that secure the hard-drive assembly to the computer base. 

5. Slide the hard-drive assembly to the side to disconnect it from the system board connector. 

6. Lift the hard-drive assembly out of the hard-drive bay. 




1 hard-drive assembly 



2 screws (4) 



7. Remove the four screws that secure the hard-drive bracket to the hard drive. 

8. Lift the hard-drive bracket off the hard drive. 




hard-drive bracket 



A 



CAUTI ON: When the hard drive is not in the computer, store it in protective antistatic paclcaging (see "Protecting Against Electrostatic Discharge" 
in the safety instructions that shipped with your computer). 



Replacing the Hard Drive 

1. Follow the instructions in Before You Begin . 

2. Remove the new hard drive from its packaging. 

Save the original packaging for storing or shipping the hard drive. 

3. Slide the hard drive into the hard-drive bracket. 



4. Replace the four screws that secure the hard-drive bracket to the hard drive. 

5. Place the hard-drive assembly in the hard-drive bay. 

6. Slide the hard-drive assembly to connect it to the system board connector. 

7. Replace the four screws that secure the hard-drive assembly to the computer base. 

8. Replace the palm-rest assembly {see Replacing the Palm-Rest Assembly ). 

9. Replace the battery (see Replacing the Battery ). 

/\ CAUTI ON: Before turning on the computer, replace all screws and ensure that no stray screws remain inside the computer. Failure to do so may 
result in damage to the computer. 



Back to Contents Page 



Back to Contents Page 

Heat Sink 

Dell^'' XPS"^ L502X Service Manual 

9 Removing the Heat Sink 
9 Replacing the Heat Sink 

y1\ WARNI NG: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best 
practices information, see the Regulatory Compliance Homepage at www.dell.com/ regulatory_ compliance. 

yf\ WARNI NG: I f you remove the heat sink from the computer when the heat sink is hot, do not touch the metal housing of the heat sink. 

y\ CAUTI ON : Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by DelT" 
is not covered by your warranty. 

j/\ CAUTI ON: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal 
surface (such as a connector on your computer). 

j/\ CAUTI ON: To help prevent damage to the system board, remove the main battery (see Removing the Battery ) before working inside the 
computer. 



Removing the Heat Sink 

1. Follow the instructions in Before You Begin . 

2. Remove the battery (see Removing the Battery ). 

3. Remove the module cover (see Removing the Module Cover ). 

4. Remove the memory module(s) (see Removing the Memory Module(s} ). 

5. Remove the palm-rest assembly (see Removing the Palm-Rest Assembly ). 

6. Remove the keyboard (see Removing the Keyboard ). 

7. Remove the display assembly (see Removing the Display Assembly ). 

8. Follow the instructions from step 9 to step 14 in Removing the Top Cover . 

9. In sequential order (indicated on the heat sink), loosen the seven captive screws that secure the heat sink to the system board. 




2 captive screws (7) 



1 heat sink 



10. Carefully lift heat sink away from the top cover. 



Replacing the Heat Sink 

1^ NOTE: The original thermal grease can be reused if the original processor and heat sink are reinstalled together. If either the processor or the heat sink 
is replaced, use the thermal pad provided in the kit to ensure that thermal conductivity is achieved. 



1. Follow the instructions in Before You Begin . 



2. Clean the thermal grease from the bottom of the heat sink and reapply it. 

3. Align the seven captive screws on the heat sink with the screw holes on the system board and tighten the screws in sequential order (indicated on the 
heat sink). 

4. Follow the instructions from step 8 to step 11 in Replacing the Top Cover . 

5. Replace the display assembly (see Replacing the Display Assembly ). 

6. Replace the keyboard {see Replacing the Keyboard ). 

7. Replace the palm-rest assembly (see Replacing the Palm-Rest Assembly ). 

8. Replace the memory module(s) (see Replacing the Memory MQdule(s) ). 

9. Replace the module cover (see Replacing the Module Cover ). 

10. Replace the battery (see Replacing the Battery ). 

j/\ CAUTI ON: Before turning on the computer, replace all screws and ensure that no stray screws remain inside the computer. Failure to do so may 
result in damage to the computer. 

Back to Contents Page 



Back to Contents Page 

Keyboard 

Dell^'' XPS"^ L502X Service Manual 

9 Removing the Keyboard 
9 Replacing the Keyboard 

y1\ WARNI NG: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best 
practices information, see the Regulatory Compliance Homepage at www.detl.com/ regulatory_ compliance. 

y\ CAUTI ON: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Deir" 
is not covered by your warranty. 

y\ CAUTI ON: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal 
surface (such as a connector on your computer). 

j\ CAUTI ON: To help prevent damage to the system board, remove the main battery (see Removing the Battery ) before working inside the 
computer. 



Removing the Keyboard 



1. Follow the instructions in Before You Begin . 

2. Remove the battery (see Removing the Battery ). 

3. Remove the palm-rest assembly (see Removing the Palm-Rest Assembly ). 

4. Push the tabs on the top cover to release the keyboard. 




1 



tabs (2) 



5. Carefully lift the keyboard and slide the keyboard tabs out of the slots on the top cover. 

6. Lift the connector latch up and pull the pull-tab to disconnect the keyboard backlight cable from the system-board connector. 




1 keyboard tabs (5) 2 keyboard backlight cable connector 



y\ CAUTI ON: The keycaps on the keyboard are fragile, easily dislodged, and time-consuming to replace. Be careful when removing and handling the 
keyboard. 

/\ CAUTI ON: Be extremely careful when removing and handling the keyboard. Failure to do so could result in scratching the display panel. 



7. Turn the keyboard over and place it over the top cover as shown in the following illustration. 

8. Lift the connector latch and disconnect the keyboard cable from the system-board connector. 




1 


top cover 


2 


keyboard 


3 


keyboard cable connector 







9. Lift the keyboard off the top cover. 



Replacing the Keyboard 



1. Follow the instructions in Before You Begin . 

2. Slide the keyboard cable into the system-board connector and press down on the connector latch to secure the cable. 

3. Slide the keyboard backlight cable into the system-board connector and press down on the connector latch to secure the cable. 

4. Slide the tabs on the keyboard into the slots on the top cover and lower the keyboard into place. 

5. Gently press the top of the keyboard to secure it to the tabs on the top cover. 

6. Replace the palm-rest assembly {see Replacing the Palm-Rest Assembly ). 

7. Replace the battery (see Replacing the Battery ). 

y\ CAUTI ON : Before turning on the computer, replace all screws and ensure that no stray screws remain inside the computer. Failure to do so may 
result in damage to the computer. 



Back to Contents Page 



Back to Contents Page 

Memory Module(s) 

Dell^'' XPS"^ L502X Service Manual 

9 Removing the Memory Modulets) 
9 Replacing the Memory Modulg(5) 

y1\ WARNI NG: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best 
practices information, see the Regulatory Compliance Homepage at www.detl.com/ regulatory_ compliance. 

j/\ CAUTI ON: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Deir*^ 
is not covered by your warranty. 

y\ CAUTI ON: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal 
surface (such as a connector on your computer). 

y\ CAUTI ON: To help prevent damage to the system board, remove the main battery (see Removing the Battery ) before working inside the 
computer. 

You can increase your computer memory by installing memory modules on the system board. See "Specifications" in the Setup Guide that shipped with your 
computer or at 5upport.dell.com/ manuals for information on the type of memory supported by your computer. 

^ NOTE: Memory modules purchased from Dell are covered under your computer warranty. 
Your computer has two user-accessible SODIMM connectors. 



Removing the Memory Module(s) 



1. Follow the instructions in Before You Begin . 

2. Remove the battery (see Removing the Battery ). 

3. Remove the module cover (see Removing the Module Cover ). 

y\ CAUTI ON: To help prevent damage to the memory-module connector, do not use tools to spread the memory module securing clips. 

4. Use your fingertips to carefully spread apart the securing clips on each end of the memory-module connector until the memory module pops up. 




1 


securing clip 


2 


memory-module connector | 


3 


memory-module | 



5. Remove the memory module from the memory-module connector. 



Replacing the iviemory Module(s) 



A 



CAUTI ON: If you need to install memory modules in two connectors, install a memory module in the lower connector before you install a memory 
module in the upper connector. 



1. Follow the instructions in Before You Begin . 

2. Align the notch in the memory module with the tab in the memory-module connector. 

3. Slide the memory module firmly into the memory-module connector at a 45-degree angle, and press the memory module down until it clicks into place. If 
you do not hear the click, remove the memory module and reinstall it. 



Kj NOTE: If the memory module is not installed properly, the computer may not boot. 




1 


tab 


2 


notch 1 


3 


memory-module connector | 



4. Replace the module cover (see Replacing the Module Cover ). 

5. Replace the battery (see Replacing the Battery ). 

6. Connect the AC adapter to your computer and an electrical outlet. 

7. Turn on the computer. 

As the computer boots, it detects the additional memory and automatically updates the system configuration information. 
To confirm the amount of memory installed in the computer: 

Click Start^^ -> Control Panel-* System and Security^ System. 

y\ CAUTI ON : Before turning on the computer, replace all screws and ensure that no stray screws remain inside the computer. Failure to do so may 
result in damage to the computer. 



Back to Contents Page 



Back to Contents Page 

Wireless Mini-Card(s) 

Dell^'' XPS^'^ L502X Service Manual 

9 Removing the Mini-Card(s} 
9 Replacing the Mini-Card(s} 

y1\ WARNI NG: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best 
practices information, see the Regulatory Compliance Homepage at www.detl.com/ regulatory_ compliance. 

j/\ CAUTI ON: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Deir" 
is not covered by your warranty. 

y\ CAUTI ON: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal 
surface (such as a connector on your computer). 

y\ CAUTI ON: To help prevent damage to the system board, remove the main battery (see Removing the Battery ) before working inside the 
computer. 

Wa NOTE: Dell does not guarantee compatibility or provide support for Mini-Cards from sources other than Dell. 

If you ordered a wireless Mini-Card with your computer, the card is already installed. 
Your computer has one full Mini-Card slot and one half Mini-Card slot: 

I One full Mini-Card slot — supports a Wireless Wide Area Network (WWAN) or TV tuner module. 

I One half Mini-Card slot — supports a Wireless Local Area Network {WLAN) and bluetooth combo card or Worldwide Interoperability for Microwave 
Access {WiMax) card. 

1^ NOTE: Depending on the configuration of the computer when it was sold, the Mini-Card slot may or may not have a Mini-Card installed. 



Removing the Mini-Card(s) 

1. Follow the instructions in Before You Begin . 

2. Remove the battery (see Removing the Battery ). 

3. Remove the module cover (see Removing the Module Cover ). 

4. Disconnect the antenna cables from the Mini-Card{s). 

5. Remove the screw that secures the Mini-Card to the system board. 

1^ NOTE: Your computer can only support either a WWAN Mini-Card or a TV tuner module in the full Mini-Card slot at a time. 




1 


antenna cables (2) 


2 


Mini-Card 


3 


screw 


4 


system-board connector 



6. Lift the Mini-Card(s) out of the system-board connector. 




A 



CAUTI ON: When the Mini-Card is not in the computer, store it in protective antistatic packaging. For more information, see "Protecting Against 
Electrostatic Discharge" in the safety information that shipped with your computer. 



Replacing the Mini-Card(s) 

1. Follow the instructions in Before You Begin . 

2. Remove the new Mini-Card from its packaging. 



j/\ CAUTI ON : Use firm and even pressure to slide the card into place. I f you use excessive force, you may damage the connector. 

j/\ CAUTI ON : The connectors are keyed to ensure correct insertion. I f you feel resisi 
board, and realign the card. 

j/\ CAUTI ON: To avoid damage to the Mini-Card, never place cables under the card. 



j/\ CAUTI ON : The connectors are keyed to ensure correct insertion. I f you feel resistance, check the connectors on the card and on the system 
board, and realign the card. 



3. I nsert the Mini-Card connector at a 45-degree angle into the system-board connector. 

4. Press the other end of the Mini-Card down into the slot on the system board and replace the screw that secures the Mini-Card to the system board. 

5. Connect the appropriate antenna cables to the Mini-Card you are installing. The following table provides the antenna cable color scheme for the Mini- 
Cards supported by your computer. 



Connectors on the Mini-Card 


Antenna Cable Color Scheme 


WLAN + Bluetooth (2 antenna cables) 

Main WLAN + Bluetooth (white triangie) 
Auxiiiary WLAN + Biuetooth (biack triangie) 


white 
biack 


WWAN (2 antenna cables) 

Main WWAN (white triangie) 
Auxiiiary WWAN (biacl< triangie) 


white 
biack 


TV tuner (1 antenna cabie) 


biack 



6. Replace the module cover (see Replacing the Module Cover ). 

7. Replace the battery (see Replacing the Battery ). 

y\ CAUTI ON: Before turning on the computer, replace all screws and ensure that no stray screws remain inside the computer. Failure to do so may 
result in damage to the computer. 

8. I nstall the drivers and utilities for your computer, as required. 

1^ NOTE: If you are installing a communication card from a source other than Dell, you must install the appropriate drivers and utilities. 



Back to Contents Page 



Back to Contents Page 

Module Cover 

Dell^'' XPS"^ L502X Service Manual 

9 Removing the Module Cover 
9 Replacing the Module Cover 

y1\ WARNI NG: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best 
practices information, see the Regulatory Compliance Homepage at www.detl.com/ regulatory_ compliance. 

j/\ CAUTI ON: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Deir" 
is not covered by your warranty. 

y\ CAUTI ON: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal 
surface (such as a connector on your computer). 

j\ CAUTI ON : To avoid damage to the computer, use only the battery designed for this particular Dell computer. Do not use batteries designed for 
other Dell computers. 



Removing the Module Cover 

1. Follow the instructions in Before You Begin . 

2. Remove the battery (see Removing the Battery ). 

3. Loosen the three captive screws that secure the module cover to the base cover. 

4. Using your fingertips, release the tabs on the module cover from the slots on the base cover. 

5. Lift the module cover off the base cover. 




1 


screws {3) 


2 


module cover 


3 


tabs (4) 


4 


base cover 



Replacing the Module Cover 

/\ CAUTI ON: To avoid damage to the computer, use only the battery designed for this particular Dell computer. 

1. Follow the instructions in Before You Begin . 

2. Align the tabs on the module cover with the slots on the base cover and snap the module cover into place. 

3. Tighten the three captive screws that secure the module cover to the base cover. 

4. Replace the battery (see Replacing the Battery ). 



Back to Contents Page 



Back to Contents Page 

Optical Drive 

Dell^'' XPS"^ L502X Service Manual 

9 Removing the Optical Drive 
9 Replacing the Optical Drive 

y1\ WARNI NG: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best 
practices information, see the Regulatory Compliance Homepage at www.detl.com/ regulatory_ compliance. 

j/\ CAUTI ON: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Deir" 
is not covered by your warranty. 

y\ CAUTI ON: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal 
surface (such as a connector on your computer). 

j\ CAUTI ON: To help prevent damage to the system board, remove the main battery (see Removing the Battery ) before working inside the 
computer. 



Removing the Optical Drive 

1. Follow the instructions in Before You Begin . 

2. Remove the battery (see Removing the Battery ). 

3. Remove the module cover (see Removing the Module Cover ). 

4. Remove the memory module(s} (see Removing the Memory Module(s} ). 

5. Remove the screw that secures the optical drive to the base cover. 

6. Using a plastic scribe, push the optical drive bracket to slide the optical drive out. 

7. Slide the optical drive out of the optical-drive bay. 




V ^^^^ 



1 


optical drive 


2 


screw 


3 


plastic scribe 


4 


optical-drive bracket 



Replacing the Optical Drive 



1. Follow the instructions in Before You Begin . 

2. Remove the new optical drive from its packaging. 

3. Slide the optical drive into the optical-drive bay until it is fully seated. 



4. Replace the screw that secures the optical drive to the base cover. 

5. Replace the memory module(s) (see Replacing the Memory MQdule(s} ). 

6. Replace the module cover (see Replacing the Module Cover ). 

7. Replace the battery (see Replacing the Battery ). 

j/\ CAUTI ON: Before turning on the computer, replace all screws and ensure that no stray screws remain inside the computer. Failure to do so may 
result in damage to the computer. 

Back to Contents Page 



Back to Contents Page 

Palm-Rest Assembly 

Dell^'' XPS'"" L502X Service Manual 

9 Removing the Palm-Rest Assembly 
9 Replacing the Palm-Rest Assembly 

y1\ WARNI NG: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best 
practices information, see the Regulatory Compliance Homepage at www.detl.com/ regulatory_ compliance. 

y\ CAUTI ON: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Deir" 
is not covered by your warranty. 

y\ CAUTI ON: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal 
surface (such as a connector on your computer). 

j\ CAUTI ON: To help prevent damage to the system board, remove the main battery (see Removing the Battery ) before working inside the 
computer. 



Removing the Palm-Rest Assembly 

1. Follow the instructions in Before You Begin . 

2. Remove the battery (see Removing the Battery ). 

3. Remove the screw that secures the palm-rest assembly to the base cover. 

4. Release and push the palm-rest assembly tabs off the base cover. 




1 


palm-rest assembly tabs (2) 


2 


screw 1 


3 


base cover | 



5. Turn the computer over and open the display as far as possible. 

6. Using a plastic scribe, gently ease the palm-rest assembly from the top cover. 




1 


plasric scribe 


2 


top cover | 


3 


palm-rest assembly 



/\ CAUTI ON: Carefully separate the palm-rest assembly from the top cover to avoid damage to the palm-rest assembly. 

7. Without pulling hard on the palm-rest assembly, place it away from the display as shown in the following illustration. 

8. Lift the connector latches and pull the pull-tabs to disconnect the touch- pad cable and the power button cable from their system-board connectors. 

9. Lift the palm-rest assembly off the top cover. 




1 


power-button cable connector 


2 


touch-pad cable connector 


3 


palm-rest assembly | 



Replacing the Palm-Rest Assembly 



1. Follow the instructions in Before You Begin . 

2. Slide the touch-pad cable and the power button cable into their system-board connectors and press down on the connector latches to secure the 
cables. 

3. Align the tabs on the palm-rest assembly with the slots on the top cover and gently snap the palm-rest assembly into place. 

4. Close the display and turn the computer over. 

5. Replace the screw that secures the palm-rest assembly to the base cover. 

6. Replace the battery (see Replacing the Battery ). 

j/\ CAUTI ON: Before turning on the computer, replace all screws and ensure that no stray screws remain inside the computer. Failure to do so may 
result in damage to the computer. 



Back to Contents Page 



Back to Contents Page 

Processor Module 

Dell^'' XPS"^ L502X Service Manual 

9 Removing the Processor Module 
9 Replacing the Processor Module 

y1\ WARNI NG: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best 
practices information, see the Regulatory Compliance Homepage at www.detl.com/ regulatory_ compliance. 

j/\ CAUTI ON: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Deir*^ 
is not covered by your warranty. 

y\ CAUTI ON: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal 
surface (such as a connector on your computer). 

j\ CAUTI ON: To help prevent damage to the system board, remove the main battery (see Removing the Battery ) before working inside the 
computer. 

Removing the Processor Module 

1. Follow the instructions in Before You Begin . 

2. Remove the battery (see Removing the Battery ). 

3. Remove the module cover (see Removing the Module Cover ). 

4. Remove the memory module(s} (see Removing the Memory Module(s} ). 

5. Remove the palm-rest assembly (see Removing the Palm-Rest Assembly ). 

6. Remove the keyboard (see Removing the Keyboard ). 

7. Remove the display assembly {see Removing the Display Assembly ). 

8. Follow the instructions from step 9 to step 14 in Removing the Top Cover . 

9. Remove the heat sink (see Removing the Heat Sink ). 

j/\ CAUTI ON: To prevent intermittent contact between the Zl F-socket cam screw and the processor when removing or replacing the processor, press 
to apply slight pressure to the centre of the processor while turning the cam screw. 

/\ CAUTI ON: To avoid damage to the processor, hold the screwdriver so that it is perpendicular to the processor when turning the cam screw. 

10. To loosen the Zl F socket, use a small, flat-blade screwdriver and rotate the Zl F-socket cam screw counterclockwise until it comes to the cam stop. 




1 


ZIF socket 


2 


processor module 


3 


pin-1 corner 


4 


Zl F-socket cam screw 



y\ CAUTI ON: To ensure maximum cooling for the processor module, do not touch the heat transfer areas on the processor thermal-cooling assembly. 
The oils in your skin can reduce the heat transfer capability of the thermal pads. 

j/\ CAUTI ON : When removing the processor module, pull the module straight up. Be careful not to bend the pins on the processor module. 

11. Lift the procGssor module off the Zl F socket. 



Replacing the Processor Module 

^ NOTE: If a new processor module is installed, you will receive a new thermal cooling assembly, which will include an affixed thermal pad, or you will 
receive a new thermal pad along with documentation to illustrate proper installation. 

1. Follow the instructions in Before You Begin . 

2. Align the pin-1 corner of the processor module with the pin-1 corner of the Zl F socket. 

Ki NOTE: The pin-1 corner of the processor module has a triangle that aligns with the triangle on the pin-1 corner of the ZIP socket. 

3. Place the processor module lightly in the ZIP socket and ensure that the processor module is positioned correctly. 

y\ CAUTI ON: To avoid damage to the processor module, hold the screwdriver perpendicular to the processor module when turning the cam screw. 

4. Tighten the ZIP socket by turning the cam screw clockwise to secure the processor module to the system board. 

5. Replace the heat sink (see Replacing the Heat Sink ). 

6. Follow the instructions from step 8 to step 11 in Replacing the Top Cover . 

7. Replace the display assembly (see Replacing the Display Assembly ). 

8. Replace the keyboard {see Replacing the Keyboard ). 

9. Replace the palm-rest assembly {see Replacing the Palm-Rest Assembly ). 

10. Replace the memory module(s) (see Replacing the Memory Module(s) ). 

11. Replace the module cover (see Replacing the Module Cover ). 

12. Replace the battery (see Replacing the Battery ). 

j/\ CAUTI ON: Before turning on the computer, replace all screws and ensure that no stray screws remain inside the computer. Failure to do so may 
result in damage to the computer. 



Back to Contents Page 



Back to Contents Page 

Power- Button Board 

Dell^'' XPS^'^ L502X Service Manual 

9 Removing the Power-Button Board 
9 Replacing the Power-Button Board 

y1\ WARNI NG: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best 
practices information, see the Regulatory Compliance Homepage at www.detl.com/ regulatory_ compliance. 

j/\ CAUTI ON: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Deir" 
is not covered by your warranty. 

y\ CAUTI ON: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal 
surface (such as a connector on your computer). 

j\ CAUTI ON: To help prevent damage to the system board, remove the main battery (see Removing the Battery ) before working inside the 
computer. 



Removing the Power-Button Board 

1. Follow the instructions in Before You Begin . 

2. Remove the battery (see Removing the Battery ). 

3. Remove the palm-rest assembly (see Removing the Palm-Rest Assembly ). 

4. Turn the palm-rest assembly over. 

5. Lift the connector latch and pull the pull-tab to disconnect the power-button cable from the connector on the power-button board. 

6. Remove the two screws that secure the power-button board to the palm-rest assembly. 

7. Lift the power-button board off the palm-rest assembly. 




1 


power-button board 


^ 


power-button cable connector | 


3 


screws (2) | 



Replacing the Power-Button Board 



1. Follow the instructions in Before You Begin . 

2. Place the power-button board on the palm-rest assembly and replace the two screws that secure the power-button board to the palm-rest assembly. 

3. Slide the power-button cable into the connector on the power-button board and press down on the connector latch to secure the power-button cable. 

4. Replace the palm-rest assembly {see Replacing the Palm-Rest Assembly ). 

5. Replace the battery (see Replacing the Battery ). 



y\ CAUTI ON: Before turning on the computer, replace all screws and ensure that no stray screws remain inside the computer. Failure to do so may 
result in damage to the computer. 

Back to Contents Page 



Back to Contents Page 

Speakers 

Dell^'' XPS"^ L502X Service Manual 

9 Removing the Speakers 
9 Replacing the Speakers 

y1\ WARNI NG: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best 
practices information, see the Regulatory Compliance Homepage at www.detl.com/ regulatory_ compliance. 

j/\ CAUTI ON: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Deir" 
is not covered by your warranty. 

y\ CAUTI ON: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal 
surface (such as a connector on your computer). 

j\ CAUTI ON: To help prevent damage to the system board, remove the main battery (see Removing the Battery ) before working inside the 
computer. 



Removing the Speakers 

1. Follow the instructions in Before You Begin . 

2. Remove the system board (see Removing the System Board ). 

3. Make note of the speakers cable routing and remove the cable from the routing guides. 

4. Remove the four screws (two on each speaker) that secure the speakers to the top cover. 




speaker cable routing 



2 speakers (2) 



screws (4) 



5. Lift the speakers along with its cable off the top cover. 



Replacing the Speakers 



1. Follow the instructions in Before You Begin . 

2. Route the speakers cable through the routing guides. 

3. Align the screw holes on the speakers with the screw holes on the top cover. 

4. Replace the four screws (two on each speaker) that secure the speakers to the top cover. 

5. Replace the system board (see Replacing the System Board ). 



j/\ CAUTI ON: Before turning on the computer, replace all screws and ensure that no stray screws remain inside the computer. Failure to do so may 
result in damage to the computer. 

Back to Contents Page 



Back to Contents Page 

System Board 

Dell^'' XPS"^ L502X Service Manual 

9 Removing the System Board 
9 Replacing the System Board 
O Entering the Service Tag in the BIOS 

/^ WARNI NG: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best 
practices information, see the Regulatory Compliance Homepage at www.dell.com/ regulatory_ compliance. 

y\ CAUTI ON: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Deir" 
is not covered by your warranty. 

y\ CAUTI ON: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal 
surface (such as a connector on your computer). 

y\ CAUTI ON: To help prevent damage to the system board, remove the main battery (see Removing the Battery ) before working inside the 
computer. 

/\ CAUTI ON: Handle components and cards by their edges, and avoid touching pins and contacts. 



Removing the System Board 



1. Follow the instructions in Before You Begin . 

2. Remove the battery (see Removing the Battery ). 

3. Remove the module cover (see Removing the Module Cover ). 

4. Remove the memory module{s) (see Removing the Memory Module(s) ). 

5. Remove the palm-rest assembly (see Removing the Palm-Rest Assembly ). 

6. Remove the keyboard (see Removing the Keyboard ). 

7. Remove the display assembly (see Removing the Display Assembly ). 

8. Follow the instructions from step 9 to step 14 in Removing the Top Cover . 

9. Disconnect the USB board cable and speaker cable from the connectors on the system board. 

15= 



/^ 



mm 




1 USB board cable connector 2 speaker cable connector 



10. Turn the top cover over. 

11. Remove the heat sink (see Removing the Heat Sink ). 

12. Remove the processor module (see Removing the Processor Module ). 



13. Disconnect the AC-adapter cable from the connector on the system board. 

14. Remove the six screws that secure the system board to the top cover. 
2> 




1 


AC-adapter connector 


2 


screws (6) 


3 


system board 







15. Carefully ease the connectors on the system board out of the slots on the top cover, and lift the system board off the top cover. 



Replacing the System Board 



1. Follow the instructions in Before You Begin . 

2. Align the connectors on the system board with the slots on the top cover and place the system board on the top cover. 

3. Replace the six screws that secure the system board to the top cover. 

4. Connect the AC-adapter cable to the connector on the system board. 

5. Replace the processor module (see Replacing the Processor Module ). 

6. Replace the heat sink (see Replacing the Heat Sink ). 

7. Turn the top cover over and connect the USB board cable and speaker cable to the connectors on the system board. 

8. Follow the instructions from step 8 to step 11 in Replacing the Top Cover . 

9. Replace the display assembly {see Replacing the Display Assembly ). 

10. Replace the keyboard (see Replacing the Keyboard ). 

11. Replace the palm-rest assembly (see Replacing the Palm-Rest Assembly ). 

12. Replace the memory module(s) (see Replacing the Memory MQdule(s) ). 

13. Replace the module cover (see Replacing the Module Cover ). 

14. Replace the battery (see Replacing the Battery ). 

y\ CAUTI ON: Before turning on the computer, replace all screws and ensure that no stray screws remain inside the computer. Failure to do so may 
result in damage to the computer. 



15. Turn on the computer. 



1^ NOTE: After you have replaced the system board, enter the computer Service Tag in the BIOS of the replacement system board. 
16. Enter the service tag (see Entering the Service Tag in the BIOS ). 

Entering the Service Tag in the Bi OS 

1. Ensure that the AC adapter is plugged in and that the main battery is installed properly. 

2. Turn on the computer. 

3. Press <F2> during POST to enter the system setup program. 

4. Navigate to the security tab and enter the service tag in the Set Service Tag field. 

Back to Contents Page 



Back to Contents Page 

Dell^" XPS"" L502X Service Manual 

K| NOTE: A NOTE indicates important information that helps you mal<e better use of your computer. 

y\ CAUTI ON : A CAUTI ON indicates potential damage to hardware or loss of data if instructions are not followed. 

A\ WARNI NG: A WARNI NG indicates a potential for property damage, personal injury, or death. 

I nformation in this document is subject to change without notice. 
© 2010 Dell Inc. All rights reserved. 

Reproduction of these materials in any manner whatsoever without the written permission of Dell I nc. is strictly forbidden. 

Trademarks used in this text: DelT", the DELL logo, and XPS™ are trademarks of Dell Inc.; Microsoft®, Windows®, and the Windows start button logo ©are either trademarks or 
registered trademarks of (Microsoft Corporation in the United States and/or other countries; Bluetooth® is a registered trademark owned by Bluetooth SIG, Inc. and is used by Dell 
under license. 

Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products. Dell inc. disclaims any 
proprietary interest in trademarks and trade names other than its own. 



Back to Contents Page 



Back to Contents Page 

Top Cover 

Dell^'' XPS"^ L502X Service Manual 

9 Removing the Top Cover 
9 Replacing the Top Cover 

y1\ WARNI NG: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best 
practices information, see the Regulatory Compliance Homepage at www.detl.com/ regulatory_ compliance. 

j/\ CAUTI ON: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Deir" 
is not covered by your warranty. 

y\ CAUTI ON: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal 
surface (such as a connector on your computer). 

j\ CAUTI ON: To help prevent damage to the system board, remove the main battery (see Removing the Battery ) before working inside the 
computer. 



Removing the Top Cover 

1. Follow the instructions in Before You Begin . 

2. Press and eject any installed cards from the Media Card Reader. 

3. Remove the battery (see Removing the Battery ). 

4. Remove the module cover (see Removing the Module Cover ). 

5. Remove the memory module(s} (see Removing the Memory Module(s) ). 

6. Remove the palm-rest assembly (see Removing the Palm-Rest Assembly ). 

7. Remove the keyboard (see Removing the Keyboard ). 

8. Remove the display assembly (see Removing the Display Assembly ). 

9. Remove the 17 screws that secure the top-cover assembly to the base cover. 




10. Turn the computer over. 

11. Disconnect the fan cable and subwoofer cable from the connectors on the system board. 

12. Remove the nine screws that secure the top-cover assembly to the base cover. 





1 


subwoofer cable connector 


2 


fan cable connector 



13. Turn the computer over and use your fingertips to gently ease the top-cover assembly off the base cover. 

14. Lift the top-cover assembly off the base cover. 




1 top-cover assembly 



15. Remove heat sink {see Removing the Heat Sink ). 

16. Remove the system board (see Removing the System Board ). 

17. Remove the AC-adapter connector (see Removing the AC-Adapter Connector ). 

18. Remove the USB board (see Removing the USB Board ). 

19. Remove the TV tuner connector (see Removing the TV Tuner Connector ). 

20. Remove the speakers (see Removing the Speakers ). 



Replacing the Top Cover 

1. Follow the instructions in Before You Begin . 

2. Replace the speakers (see Replacing the Speakers ). 



3. Replace the TV tuner connector {see Replacing the TV Tuner Connector ). 

4. Replace the USB board {see Replacing the USB Board ). 

5. Replace the AC-adapter connector (see Replacing the AC-Adapter Connector ). 

6. Replace the system board (see Replacing the System Board ). 

7. Replace the heat sink (see Replacing the Heat Sink ). 

8. Align the tabs on the top cover with the slots on the base cover and snap the top-cover assembly onto the base cover. 

9. Replace the 17 screws that secure the top-cover assembly to the base cover. 

10. Turn the computer over and replace the nine screws that secure the top-cover assembly to the base cover. 

11. Connect the fan cable and subwoofer cable to the connectors on the system board. 

12. Replace the display assembly {see Replacing the Display Assembly ). 

13. Replace the keyboard {see Replacing the Keyboard ). 

14. Replace the palm-rest assembly {see Replacing the Palm-Rest Assembly ). 

15. Replace the memory module(s) (see Replacing the Memory MQdule(s) ). 

16. Replace the module cover (see Replacing the Module Cover ). 

17. Replace any blank or card you removed from the Media Card Reader. 

18. Replace the battery (see Replacing the Battery ). 

y\ CAUTI ON: Before turning on the computer, replace all screws and ensure that no stray screws remain inside the computer. Failure to do so may 
result in damage to the computer. 

Back to Contents Page 



Back to Contents Page 

TV Tuner Connector 

Dell^'' XPS^*^ L502X Service Manual 

9 Removing the TV Tuner Connector 
9 Replacing the TV Tuner Connector 

y1\ WARNI NG: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best 
practices information, see the Regulatory Compliance Homepage at www.detl.com/ regulatory_ compliance. 

y\ CAUTI ON: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Deir" 
is not covered by your warranty. 

y\ CAUTI ON: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal 
surface (such as a connector on your computer). 

j\ CAUTI ON: To help prevent damage to the system board, remove the main battery (see Removing the Battery ) before working inside the 
computer. 



Removing the TV Tuner Connector 

1. Follow the instructions in Before You Begin . 

2. Remove the battery (see Removing the Battery ). 

3. Remove the module cover (see Removing the Module Cover ). 

4. Remove the memory module(s} (see Removing the Memory Module(s} ). 

5. Remove the palm-rest assembly (see Removing the Palm-Rest Assembly ). 

6. Remove the keyboard (see Removing the Keyboard ). 

7. Remove the display assembly {see Removing the Display Assembly ). 

8. Follow the instructions from step 9 to step 14 in Removing the Top Cover . 

9. Remove the AC adapter connector (see Removing the AC-Adapter Connector ). 

10. Make note of the TV tuner connector cable routing and remove the cable from the routing guides. 

11. Remove the two screws that secure the TV tuner connector to the top cover. 




1 screws (2) 



2 TV tuner connector cable 



12. Lift the TV tuner connector off the top cover. 



Replacing the TV Tuner Connector 



1. Follow the instructions in Before You Begin . 

2. Align the screw holes on the TV tuner connector with the screw holes on the top cover. 

3. Replace the two screws that secure the TV tuner connector to the top cover. 

4. Route the TV tuner connector cable through the routing guides. 

5. Replace the AC-adapter connector (see Replacing the AC-Adapter Connector ). 

6. Follow the instructions from step 8 to step 11 in Replacing the Top Cover . 

7. Replace the display assembly {see Replacing the Display Assembly ). 

8. Replace the keyboard {see Replacing the Keyboard ). 

9. Replace the palm-rest assembly {see Replacing the Palm-Rest Assembly ). 

10. Replace the memory module(s) (see Replacing the Memory Module(s) ). 

11. Replace the module cover (see Replacing the Module Cover ). 

12. Replace the battery (see Replacing the Battery ). 

/\ CAUTI ON: Before turning on the computer, replace all screws and ensure that no stray screws remain inside the computer. Failure to do so may 
result in damage to the computer. 

Back to Contents Page 



Back to Contents Page 

Subwoofer 

Dell^'' XPS"^ L502X Service Manual 

9 Removinq the Subwoofer 
9 Replacing the Subwoofer 

y1\ WARNI NG: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best 
practices information, see the Regulatory Compliance Homepage at www.detl.com/ regulatory_ compliance. 

j/\ CAUTI ON: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Deir" 
is not covered by your warranty. 

y\ CAUTI ON: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal 
surface (such as a connector on your computer). 

j\ CAUTI ON: To help prevent damage to the system board, remove the main battery (see Removinq the Battery ) before working inside the 
computer. 



Removing the Subwoofer 

1. Follow the instructions in Before You Begin . 

2. Remove the battery (see Removinq the Battery ). 

3. Remove the module cover (see Removinq the Module Cover ). 

4. Remove the memory module(s} (see Removinq the Memory Module(s} ). 

5. Remove the palm-rest assembly (see Removinq the Palm-Rest Assembly ). 

6. Remove the keyboard (see Removinq the Keyboard ). 

7. Remove the display assembly {see Removing the Display Assembly ). 

8. Follow the instructions from step 9 to step 14 in Removing the Top Cover . 

9. Remove the four screws that secure the subwoofer into the base cover. 




1 


subwoofer 


2 


screws (4) 



10. Lift the subwoofer off the top cover. 



Replacing the Subwoofer 



1. Follow the instructions in Before You Begin . 



2. Place the subwoofer on the base cover. 

3. Replace the four screws that secure the subwoofer to the base cover. 

4. Follow the instructions from step 8 to step 11 in Replacing the Top Cover . 

5. Replace the display assembly {see Replacing the Display Assembly ). 

6. Replace the keyboard {see Replacing the Keyboard ). 

7. Replace the palm-rest assembly {see Replacing the Palm-Rest Assembly ). 

8. Replace the memory module(s) (see Replacing the Memory Module(s) ). 

9. Replace the module cover (see Replacing the Module Cover ). 
10. Replace the battery (see Replacing the Battery ). 

/\ CAUTI ON : Before turning on the computer, replace all screws and ensure that no stray screws remain inside the computer. Failure to do so may 
result in damage to the computer. 

Back to Contents Page